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Accrued Expenses
 12 Months Ended
Dec. 31, 2013
Accrued Expenses  
Accrued Expenses

12. Accrued Expenses

        Accrued expenses consist of the following (in thousands):

 
   December 31,
2013		   December 31,
2012		  

Technology access fee payable to Intrexon (present value)

   $ 2,186   $ —  

Compensation and related benefits

     719     471  

Legal, audit and tax services

     605     330  

Preclinical, clinical and contract manufacturing

     258     93  

Consulting

     174     139  

Other expenses

     178     178  
           
​ ​ ​ ​ ​ ​ ​ ​

 

   $ 4,120   $ 1,211  
           
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